When there is power domain bind with bus clock,
The call flow:
devm_regmap_init_mmio_clk
- clk_prepare()
- clk_pm_runtime_get()
cause the power domain of clock always be enabled after
regmap_init(). which impact the power consumption.
So use devm_regmap_init_mmio instead of
devm_regmap_init_mmio_clk, then explicitly enable clock when
using by pm_runtime_get(), if CONFIG_PM=n, then
fsl_sai_runtime_resume will be explicitly called.
Signed-off-by: Shengjiu Wang <[email protected]>
Signed-off-by: Viorel Suman <[email protected]>
---
sound/soc/fsl/fsl_sai.c | 48 +++++++++++++++++++++++++++--------------
1 file changed, 32 insertions(+), 16 deletions(-)
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 9e7893f91882..f2c70a31c7bb 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -987,6 +987,9 @@ static int fsl_sai_check_version(struct device *dev)
return 0;
}
+static int fsl_sai_runtime_suspend(struct device *dev);
+static int fsl_sai_runtime_resume(struct device *dev);
+
static int fsl_sai_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -1019,24 +1022,21 @@ static int fsl_sai_probe(struct platform_device *pdev)
ARRAY_SIZE(fsl_sai_reg_defaults_ofs8);
}
- sai->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
- "bus", base, &fsl_sai_regmap_config);
-
- /* Compatible with old DTB cases */
- if (IS_ERR(sai->regmap) && PTR_ERR(sai->regmap) != -EPROBE_DEFER)
- sai->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
- "sai", base, &fsl_sai_regmap_config);
+ sai->regmap = devm_regmap_init_mmio(&pdev->dev, base, &fsl_sai_regmap_config);
if (IS_ERR(sai->regmap)) {
dev_err(&pdev->dev, "regmap init failed\n");
return PTR_ERR(sai->regmap);
}
- /* No error out for old DTB cases but only mark the clock NULL */
sai->bus_clk = devm_clk_get(&pdev->dev, "bus");
+ /* Compatible with old DTB cases */
+ if (IS_ERR(sai->bus_clk) && PTR_ERR(sai->bus_clk) != -EPROBE_DEFER)
+ sai->bus_clk = devm_clk_get(&pdev->dev, "sai");
if (IS_ERR(sai->bus_clk)) {
dev_err(&pdev->dev, "failed to get bus clock: %ld\n",
PTR_ERR(sai->bus_clk));
- sai->bus_clk = NULL;
+ /* -EPROBE_DEFER */
+ return PTR_ERR(sai->bus_clk);
}
for (i = 1; i < FSL_SAI_MCLK_MAX; i++) {
@@ -1117,6 +1117,18 @@ static int fsl_sai_probe(struct platform_device *pdev)
sai->dma_params_tx.maxburst = FSL_SAI_MAXBURST_TX;
platform_set_drvdata(pdev, sai);
+ pm_runtime_enable(&pdev->dev);
+ if (!pm_runtime_enabled(&pdev->dev)) {
+ ret = fsl_sai_runtime_resume(&pdev->dev);
+ if (ret)
+ goto err_pm_disable;
+ }
+
+ ret = pm_runtime_get_sync(&pdev->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&pdev->dev);
+ goto err_pm_get_sync;
+ }
/* Get sai version */
ret = fsl_sai_check_version(&pdev->dev);
@@ -1130,26 +1142,30 @@ static int fsl_sai_probe(struct platform_device *pdev)
FSL_SAI_MCTL_MCLK_EN, FSL_SAI_MCTL_MCLK_EN);
}
- pm_runtime_enable(&pdev->dev);
- regcache_cache_only(sai->regmap, true);
+ ret = pm_runtime_put_sync(&pdev->dev);
+ if (ret < 0)
+ goto err_pm_get_sync;
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
&sai->cpu_dai_drv, 1);
if (ret)
- goto err_pm_disable;
+ goto err_pm_get_sync;
if (sai->soc_data->use_imx_pcm) {
ret = imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE);
if (ret)
- goto err_pm_disable;
+ goto err_pm_get_sync;
} else {
ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
if (ret)
- goto err_pm_disable;
+ goto err_pm_get_sync;
}
return ret;
+err_pm_get_sync:
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ fsl_sai_runtime_suspend(&pdev->dev);
err_pm_disable:
pm_runtime_disable(&pdev->dev);
@@ -1159,6 +1175,8 @@ static int fsl_sai_probe(struct platform_device *pdev)
static int fsl_sai_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ fsl_sai_runtime_suspend(&pdev->dev);
return 0;
}
@@ -1219,7 +1237,6 @@ static const struct of_device_id fsl_sai_ids[] = {
};
MODULE_DEVICE_TABLE(of, fsl_sai_ids);
-#ifdef CONFIG_PM
static int fsl_sai_runtime_suspend(struct device *dev)
{
struct fsl_sai *sai = dev_get_drvdata(dev);
@@ -1292,7 +1309,6 @@ static int fsl_sai_runtime_resume(struct device *dev)
return ret;
}
-#endif /* CONFIG_PM */
static const struct dev_pm_ops fsl_sai_pm_ops = {
SET_RUNTIME_PM_OPS(fsl_sai_runtime_suspend,
--
2.27.0
On Fri, 19 Mar 2021 16:06:43 +0800, Shengjiu Wang wrote:
> When there is power domain bind with bus clock,
>
> The call flow:
> devm_regmap_init_mmio_clk
> - clk_prepare()
> - clk_pm_runtime_get()
>
> [...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: fsl_sai: Don't use devm_regmap_init_mmio_clk
commit: 2277e7e36b4b8c27eb8d2fb33a20440bc800c2d7
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
On Fri, Mar 19, 2021 at 04:06:43PM +0800, Shengjiu Wang wrote:
> When there is power domain bind with bus clock,
>
> The call flow:
> devm_regmap_init_mmio_clk
> - clk_prepare()
> - clk_pm_runtime_get()
>
> cause the power domain of clock always be enabled after
> regmap_init(). which impact the power consumption.
>
> So use devm_regmap_init_mmio instead of
> devm_regmap_init_mmio_clk, then explicitly enable clock when
> using by pm_runtime_get(), if CONFIG_PM=n, then
> fsl_sai_runtime_resume will be explicitly called.
>
> Signed-off-by: Shengjiu Wang <[email protected]>
> Signed-off-by: Viorel Suman <[email protected]>
This patch results in a crash when running mcimx6ul-evk in qemu.
Reverting it fixes the problem.
Crash and bisect logs attached.
Guenter
---
[ 19.196778] 8<--- cut here ---
[ 19.197011] Unhandled fault: external abort on non-linefetch (0x808) at 0xd1588000
[ 19.197135] pgd = (ptrval)
[ 19.197203] [d1588000] *pgd=824da811, *pte=0202c653, *ppte=0202c453
[ 19.197764] Internal error: : 808 [#1] SMP ARM
[ 19.197953] Modules linked in:
[ 19.198108] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.12.0-rc6-next-20210409 #1
[ 19.198234] Hardware name: Freescale i.MX6 Ultralite (Device Tree)
[ 19.198354] PC is at regmap_mmio_write32le+0x24/0x2c
[ 19.198482] LR is at regmap_mmio_write32le+0x1c/0x2c
[ 19.198544] pc : [<c0965d6c>] lr : [<c0965d64>] psr: 60000093
[ 19.198611] sp : c20b5cf0 ip : 00000000 fp : c017a344
[ 19.198669] r10: c217c1b0 r9 : c20b4000 r8 : c26fcc00
[ 19.198729] r7 : 01000000 r6 : c26ff580 r5 : 00000000 r4 : 01000000
[ 19.198801] r3 : d1588000 r2 : 01000000 r1 : d1588000 r0 : c26ff580
[ 19.198896] Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none
[ 19.198982] Control: 10c5387d Table: 826bc06a DAC: 00000051
[ 19.199060] Register r0 information: slab kmalloc-64 start c26ff580 pointer offset 0 size 64
[ 19.199421] Register r1 information: 0-page vmalloc region starting at 0xd1588000 allocated at __devm_ioremap+0x90/0xa4
[ 19.199587] Register r2 information: non-paged memory
[ 19.199667] Register r3 information: 0-page vmalloc region starting at 0xd1588000 allocated at __devm_ioremap+0x90/0xa4
[ 19.199774] Register r4 information: non-paged memory
[ 19.199832] Register r5 information: NULL pointer
[ 19.199888] Register r6 information: slab kmalloc-64 start c26ff580 pointer offset 0 size 64
[ 19.199998] Register r7 information: non-paged memory
[ 19.200056] Register r8 information: slab kmalloc-1k start c26fcc00 pointer offset 0 size 1024
[ 19.200167] Register r9 information: non-slab/vmalloc memory
[ 19.200252] Register r10 information: slab kmalloc-1k start c217c000 pointer offset 432 size 1024
[ 19.200367] Register r11 information: non-slab/vmalloc memory
[ 19.200431] Register r12 information: NULL pointer
[ 19.200495] Process swapper/0 (pid: 1, stack limit = 0x(ptrval))
[ 19.200596] Stack: (0xc20b5cf0 to 0xc20b6000)
[ 19.200755] 5ce0: c26ff580 00000000 01000000 c0965f40
[ 19.200932] 5d00: c26fcc00 00000000 00000000 c095f3cc c20c0000 c26fcc00 00000000 01000000
[ 19.201096] 5d20: c269b840 00000000 c20b4000 c217c1b0 c017a344 c0961130 00000080 c217c010
[ 19.201259] 5d40: c26ff5c0 c0d21354 c217c010 c0946e24 00000000 c0946e24 c217c114 c094a894
[ 19.201420] 5d60: c217c010 c0946e24 c2173810 c217c114 c2173914 c20b4000 c217c1b0 c094a930
[ 19.201582] 5d80: c217c010 c0946e24 c2173810 c094a468 c20c0000 c20b4000 c094a6a0 60000013
[ 19.201744] 5da0: 00000002 cbdc8024 c217c114 5bdc6b72 60000013 60000013 c217c114 00000004
[ 19.201906] 5dc0: 00000002 cbdc8024 c20b4000 c269b880 00000000 c094a6b4 c269b840 c217c010
[ 19.202067] 5de0: c217c000 c0d2176c 00000000 00000000 00000000 00000000 c2176340 c21d5c00
[ 19.202228] 5e00: 00000000 6b6c636d 00000033 5bdc6b72 00000000 00000000 c217c010 c18d47fc
[ 19.202389] 5e20: c1f70c20 00000000 c18d47fc 00000000 00000000 c093f540 c217c010 c1f70c1c
[ 19.202551] 5e40: 00000000 c1f70c20 00000000 c093cdec c217c010 c18d47fc c18d47fc c20b4000
[ 19.202712] 5e60: 00000000 c166e854 c20af880 c093d0fc c217c010 00000000 c18d47fc c093d418
[ 19.202873] 5e80: 00000000 c18d47fc c217c010 c093d484 00000000 c18d47fc c093d420 c093aefc
[ 19.203035] 5ea0: c26fe980 c20ae2b0 c214be94 5bdc6b72 c20ae2e4 c18d47fc c26fe980 00000000
[ 19.203196] 5ec0: c187bcf8 c093c0b8 c14db3fc c1661678 c18f4c20 c18d47fc c1661678 c18f4c20
[ 19.203357] 5ee0: c17093d0 c093e1e4 c20b4000 c1661678 c18f4c20 c01022b0 00000000 00000000
[ 19.203533] 5f00: c20af8ec 00000000 c17e0b10 c0f39294 c17093d0 ffffffff c14a1cb8 c20b4000
[ 19.203696] 5f20: c18f4c20 c17093d0 c15644e0 c18ff000 c166e854 000001c6 00000000 c01af994
[ 19.203858] 5f40: 00000000 5bdc6b72 c168dca8 00000007 c166e874 c15644e0 c18ff000 c166e854
[ 19.204019] 5f60: c20af880 c16010a0 00000006 00000006 00000000 c16003e8 c0f46080 000001c6
[ 19.204180] 5f80: c17097d0 00000000 c0f3a784 00000000 00000000 00000000 00000000 00000000
[ 19.204342] 5fa0: 00000000 c0f3a78c 00000000 c010013c 00000000 00000000 00000000 00000000
[ 19.204503] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 19.204663] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[ 19.204828] [<c0965d6c>] (regmap_mmio_write32le) from [<c0965f40>] (regmap_mmio_write+0x3c/0x54)
[ 19.204947] [<c0965f40>] (regmap_mmio_write) from [<c095f3cc>] (_regmap_write+0x4c/0x1f4)
[ 19.205034] [<c095f3cc>] (_regmap_write) from [<c0961130>] (regmap_write+0x3c/0x60)
[ 19.205114] [<c0961130>] (regmap_write) from [<c0d21354>] (fsl_sai_runtime_resume+0x9c/0x1ec)
[ 19.205206] [<c0d21354>] (fsl_sai_runtime_resume) from [<c094a894>] (__rpm_callback+0xb4/0x130)
[ 19.205297] [<c094a894>] (__rpm_callback) from [<c094a930>] (rpm_callback+0x20/0x80)
[ 19.205379] [<c094a930>] (rpm_callback) from [<c094a468>] (rpm_resume+0x604/0x7ec)
[ 19.205459] [<c094a468>] (rpm_resume) from [<c094a6b4>] (__pm_runtime_resume+0x64/0xa4)
[ 19.205543] [<c094a6b4>] (__pm_runtime_resume) from [<c0d2176c>] (fsl_sai_probe+0x2c8/0x674)
[ 19.205630] [<c0d2176c>] (fsl_sai_probe) from [<c093f540>] (platform_probe+0x58/0xb8)
[ 19.205694] [<c093f540>] (platform_probe) from [<c093cdec>] (really_probe+0xec/0x398)
[ 19.205765] [<c093cdec>] (really_probe) from [<c093d0fc>] (driver_probe_device+0x64/0xc0)
[ 19.205854] [<c093d0fc>] (driver_probe_device) from [<c093d418>] (device_driver_attach+0x58/0x60)
[ 19.205944] [<c093d418>] (device_driver_attach) from [<c093d484>] (__driver_attach+0x64/0xdc)
[ 19.206028] [<c093d484>] (__driver_attach) from [<c093aefc>] (bus_for_each_dev+0x78/0xb8)
[ 19.206113] [<c093aefc>] (bus_for_each_dev) from [<c093c0b8>] (bus_add_driver+0x150/0x1dc)
[ 19.206200] [<c093c0b8>] (bus_add_driver) from [<c093e1e4>] (driver_register+0x74/0x108)
[ 19.206285] [<c093e1e4>] (driver_register) from [<c01022b0>] (do_one_initcall+0x80/0x3a8)
[ 19.206374] [<c01022b0>] (do_one_initcall) from [<c16010a0>] (kernel_init_freeable+0x158/0x1f4)
[ 19.206466] [<c16010a0>] (kernel_init_freeable) from [<c0f3a78c>] (kernel_init+0x8/0x11c)
[ 19.206556] [<c0f3a78c>] (kernel_init) from [<c010013c>] (ret_from_fork+0x14/0x38)
[ 19.206653] Exception stack(0xc20b5fb0 to 0xc20b5ff8)
[ 19.206749] 5fa0: 00000000 00000000 00000000 00000000
[ 19.206916] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 19.207063] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 19.207290] Code: ee073f9a ebdeca40 e5963000 e0831005 (e5814000)
[ 19.207813] ---[ end trace 4c72393d5e30d6c1 ]---
---
# bad: [e99d8a8495175df8cb8b739f8cf9b0fc9d0cd3b5] Add linux-next specific files for 20210409
# good: [e49d033bddf5b565044e2abe4241353959bc9120] Linux 5.12-rc6
git bisect start 'HEAD' 'v5.12-rc6'
# good: [24c5f79572740c1744a7ec2e9e21b541acab6de3] Merge remote-tracking branch 'crypto/master'
git bisect good 24c5f79572740c1744a7ec2e9e21b541acab6de3
# bad: [4b90473874c7b6af320b9815f82ac305fd8807f7] Merge remote-tracking branch 'ftrace/for-next'
git bisect bad 4b90473874c7b6af320b9815f82ac305fd8807f7
# good: [9cf3382276b26848891c7e072db0a774fadd10e4] Merge remote-tracking branch 'sound/for-next'
git bisect good 9cf3382276b26848891c7e072db0a774fadd10e4
# bad: [f8d16164c586548d7ccedc058ca9ae547e0cebbe] Merge remote-tracking branch 'mmc/next'
git bisect bad f8d16164c586548d7ccedc058ca9ae547e0cebbe
# bad: [c7c19ec098b862a688291f5a1101f7de6e4b0a6c] ASoC: Intel: kbl: Add MST route change to kbl machine drivers
git bisect bad c7c19ec098b862a688291f5a1101f7de6e4b0a6c
# good: [1db19c151819dea7a0dc4d888250d25abaf229ca] ASoC: soc-pcm: fixup dpcm_be_dai_startup() user count
git bisect good 1db19c151819dea7a0dc4d888250d25abaf229ca
# bad: [f89c0a87b4066fbb0dc6f8039b211bd79a9ab663] Merge tag 'ib-mfd-extcon-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into asoc-5.13
git bisect bad f89c0a87b4066fbb0dc6f8039b211bd79a9ab663
# good: [a2cc1568dc50020a807c94bd14a053dd54e9c35e] ASoC: tscs454: remove useless test on PLL disable
git bisect good a2cc1568dc50020a807c94bd14a053dd54e9c35e
# good: [cb11f79b4af65005584880eb408f9748c32661d0] ASoC: soc-pcm: indicate error message at soc_pcm_hw_params()
git bisect good cb11f79b4af65005584880eb408f9748c32661d0
# good: [60adbd8fbf486214f4ae1946e61df69c3867e20b] ASoC: don't indicate error message for snd_soc_[pcm_]component_xxx()
git bisect good 60adbd8fbf486214f4ae1946e61df69c3867e20b
# bad: [dfb81e3b5f47aa0ea5e4832eeb720bc22f07d0c1] ASoC: SOF: Intel: hda: drop display power on/off in D0i3 flows
git bisect bad dfb81e3b5f47aa0ea5e4832eeb720bc22f07d0c1
# good: [7e71b48f9e27e437ca523432ea285c2585a539dc] ASoC: amd: Add support for RT5682 codec in machine driver
git bisect good 7e71b48f9e27e437ca523432ea285c2585a539dc
# bad: [b951b51e2ca4d37dc9781e14d8a49d2f2b7e715b] ASoC: SOF: add a helper to get topology configured mclk
git bisect bad b951b51e2ca4d37dc9781e14d8a49d2f2b7e715b
# bad: [2277e7e36b4b8c27eb8d2fb33a20440bc800c2d7] ASoC: fsl_sai: Don't use devm_regmap_init_mmio_clk
git bisect bad 2277e7e36b4b8c27eb8d2fb33a20440bc800c2d7
# first bad commit: [2277e7e36b4b8c27eb8d2fb33a20440bc800c2d7] ASoC: fsl_sai: Don't use devm_regmap_init_mmio_clk
On Sun, Apr 11, 2021 at 10:43 PM Guenter Roeck <[email protected]> wrote:
>
> On Fri, Mar 19, 2021 at 04:06:43PM +0800, Shengjiu Wang wrote:
> > When there is power domain bind with bus clock,
> >
> > The call flow:
> > devm_regmap_init_mmio_clk
> > - clk_prepare()
> > - clk_pm_runtime_get()
> >
> > cause the power domain of clock always be enabled after
> > regmap_init(). which impact the power consumption.
> >
> > So use devm_regmap_init_mmio instead of
> > devm_regmap_init_mmio_clk, then explicitly enable clock when
> > using by pm_runtime_get(), if CONFIG_PM=n, then
> > fsl_sai_runtime_resume will be explicitly called.
> >
> > Signed-off-by: Shengjiu Wang <[email protected]>
> > Signed-off-by: Viorel Suman <[email protected]>
>
> This patch results in a crash when running mcimx6ul-evk in qemu.
> Reverting it fixes the problem.
>
> Crash and bisect logs attached.
>
> Guenter
>
> ---
> [ 19.196778] 8<--- cut here ---
> [ 19.197011] Unhandled fault: external abort on non-linefetch (0x808) at 0xd1588000
> [ 19.197135] pgd = (ptrval)
> [ 19.197203] [d1588000] *pgd=824da811, *pte=0202c653, *ppte=0202c453
> [ 19.197764] Internal error: : 808 [#1] SMP ARM
> [ 19.197953] Modules linked in:
> [ 19.198108] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.12.0-rc6-next-20210409 #1
> [ 19.198234] Hardware name: Freescale i.MX6 Ultralite (Device Tree)
> [ 19.198354] PC is at regmap_mmio_write32le+0x24/0x2c
> [ 19.198482] LR is at regmap_mmio_write32le+0x1c/0x2c
> [ 19.198544] pc : [<c0965d6c>] lr : [<c0965d64>] psr: 60000093
> [ 19.198611] sp : c20b5cf0 ip : 00000000 fp : c017a344
> [ 19.198669] r10: c217c1b0 r9 : c20b4000 r8 : c26fcc00
> [ 19.198729] r7 : 01000000 r6 : c26ff580 r5 : 00000000 r4 : 01000000
> [ 19.198801] r3 : d1588000 r2 : 01000000 r1 : d1588000 r0 : c26ff580
> [ 19.198896] Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none
> [ 19.198982] Control: 10c5387d Table: 826bc06a DAC: 00000051
> [ 19.199060] Register r0 information: slab kmalloc-64 start c26ff580 pointer offset 0 size 64
> [ 19.199421] Register r1 information: 0-page vmalloc region starting at 0xd1588000 allocated at __devm_ioremap+0x90/0xa4
> [ 19.199587] Register r2 information: non-paged memory
> [ 19.199667] Register r3 information: 0-page vmalloc region starting at 0xd1588000 allocated at __devm_ioremap+0x90/0xa4
> [ 19.199774] Register r4 information: non-paged memory
> [ 19.199832] Register r5 information: NULL pointer
> [ 19.199888] Register r6 information: slab kmalloc-64 start c26ff580 pointer offset 0 size 64
> [ 19.199998] Register r7 information: non-paged memory
> [ 19.200056] Register r8 information: slab kmalloc-1k start c26fcc00 pointer offset 0 size 1024
> [ 19.200167] Register r9 information: non-slab/vmalloc memory
> [ 19.200252] Register r10 information: slab kmalloc-1k start c217c000 pointer offset 432 size 1024
> [ 19.200367] Register r11 information: non-slab/vmalloc memory
> [ 19.200431] Register r12 information: NULL pointer
> [ 19.200495] Process swapper/0 (pid: 1, stack limit = 0x(ptrval))
> [ 19.200596] Stack: (0xc20b5cf0 to 0xc20b6000)
> [ 19.200755] 5ce0: c26ff580 00000000 01000000 c0965f40
> [ 19.200932] 5d00: c26fcc00 00000000 00000000 c095f3cc c20c0000 c26fcc00 00000000 01000000
> [ 19.201096] 5d20: c269b840 00000000 c20b4000 c217c1b0 c017a344 c0961130 00000080 c217c010
> [ 19.201259] 5d40: c26ff5c0 c0d21354 c217c010 c0946e24 00000000 c0946e24 c217c114 c094a894
> [ 19.201420] 5d60: c217c010 c0946e24 c2173810 c217c114 c2173914 c20b4000 c217c1b0 c094a930
> [ 19.201582] 5d80: c217c010 c0946e24 c2173810 c094a468 c20c0000 c20b4000 c094a6a0 60000013
> [ 19.201744] 5da0: 00000002 cbdc8024 c217c114 5bdc6b72 60000013 60000013 c217c114 00000004
> [ 19.201906] 5dc0: 00000002 cbdc8024 c20b4000 c269b880 00000000 c094a6b4 c269b840 c217c010
> [ 19.202067] 5de0: c217c000 c0d2176c 00000000 00000000 00000000 00000000 c2176340 c21d5c00
> [ 19.202228] 5e00: 00000000 6b6c636d 00000033 5bdc6b72 00000000 00000000 c217c010 c18d47fc
> [ 19.202389] 5e20: c1f70c20 00000000 c18d47fc 00000000 00000000 c093f540 c217c010 c1f70c1c
> [ 19.202551] 5e40: 00000000 c1f70c20 00000000 c093cdec c217c010 c18d47fc c18d47fc c20b4000
> [ 19.202712] 5e60: 00000000 c166e854 c20af880 c093d0fc c217c010 00000000 c18d47fc c093d418
> [ 19.202873] 5e80: 00000000 c18d47fc c217c010 c093d484 00000000 c18d47fc c093d420 c093aefc
> [ 19.203035] 5ea0: c26fe980 c20ae2b0 c214be94 5bdc6b72 c20ae2e4 c18d47fc c26fe980 00000000
> [ 19.203196] 5ec0: c187bcf8 c093c0b8 c14db3fc c1661678 c18f4c20 c18d47fc c1661678 c18f4c20
> [ 19.203357] 5ee0: c17093d0 c093e1e4 c20b4000 c1661678 c18f4c20 c01022b0 00000000 00000000
> [ 19.203533] 5f00: c20af8ec 00000000 c17e0b10 c0f39294 c17093d0 ffffffff c14a1cb8 c20b4000
> [ 19.203696] 5f20: c18f4c20 c17093d0 c15644e0 c18ff000 c166e854 000001c6 00000000 c01af994
> [ 19.203858] 5f40: 00000000 5bdc6b72 c168dca8 00000007 c166e874 c15644e0 c18ff000 c166e854
> [ 19.204019] 5f60: c20af880 c16010a0 00000006 00000006 00000000 c16003e8 c0f46080 000001c6
> [ 19.204180] 5f80: c17097d0 00000000 c0f3a784 00000000 00000000 00000000 00000000 00000000
> [ 19.204342] 5fa0: 00000000 c0f3a78c 00000000 c010013c 00000000 00000000 00000000 00000000
> [ 19.204503] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> [ 19.204663] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
> [ 19.204828] [<c0965d6c>] (regmap_mmio_write32le) from [<c0965f40>] (regmap_mmio_write+0x3c/0x54)
> [ 19.204947] [<c0965f40>] (regmap_mmio_write) from [<c095f3cc>] (_regmap_write+0x4c/0x1f4)
> [ 19.205034] [<c095f3cc>] (_regmap_write) from [<c0961130>] (regmap_write+0x3c/0x60)
> [ 19.205114] [<c0961130>] (regmap_write) from [<c0d21354>] (fsl_sai_runtime_resume+0x9c/0x1ec)
> [ 19.205206] [<c0d21354>] (fsl_sai_runtime_resume) from [<c094a894>] (__rpm_callback+0xb4/0x130)
> [ 19.205297] [<c094a894>] (__rpm_callback) from [<c094a930>] (rpm_callback+0x20/0x80)
> [ 19.205379] [<c094a930>] (rpm_callback) from [<c094a468>] (rpm_resume+0x604/0x7ec)
> [ 19.205459] [<c094a468>] (rpm_resume) from [<c094a6b4>] (__pm_runtime_resume+0x64/0xa4)
> [ 19.205543] [<c094a6b4>] (__pm_runtime_resume) from [<c0d2176c>] (fsl_sai_probe+0x2c8/0x674)
> [ 19.205630] [<c0d2176c>] (fsl_sai_probe) from [<c093f540>] (platform_probe+0x58/0xb8)
> [ 19.205694] [<c093f540>] (platform_probe) from [<c093cdec>] (really_probe+0xec/0x398)
> [ 19.205765] [<c093cdec>] (really_probe) from [<c093d0fc>] (driver_probe_device+0x64/0xc0)
> [ 19.205854] [<c093d0fc>] (driver_probe_device) from [<c093d418>] (device_driver_attach+0x58/0x60)
> [ 19.205944] [<c093d418>] (device_driver_attach) from [<c093d484>] (__driver_attach+0x64/0xdc)
> [ 19.206028] [<c093d484>] (__driver_attach) from [<c093aefc>] (bus_for_each_dev+0x78/0xb8)
> [ 19.206113] [<c093aefc>] (bus_for_each_dev) from [<c093c0b8>] (bus_add_driver+0x150/0x1dc)
> [ 19.206200] [<c093c0b8>] (bus_add_driver) from [<c093e1e4>] (driver_register+0x74/0x108)
> [ 19.206285] [<c093e1e4>] (driver_register) from [<c01022b0>] (do_one_initcall+0x80/0x3a8)
> [ 19.206374] [<c01022b0>] (do_one_initcall) from [<c16010a0>] (kernel_init_freeable+0x158/0x1f4)
> [ 19.206466] [<c16010a0>] (kernel_init_freeable) from [<c0f3a78c>] (kernel_init+0x8/0x11c)
> [ 19.206556] [<c0f3a78c>] (kernel_init) from [<c010013c>] (ret_from_fork+0x14/0x38)
> [ 19.206653] Exception stack(0xc20b5fb0 to 0xc20b5ff8)
> [ 19.206749] 5fa0: 00000000 00000000 00000000 00000000
> [ 19.206916] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> [ 19.207063] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
> [ 19.207290] Code: ee073f9a ebdeca40 e5963000 e0831005 (e5814000)
> [ 19.207813] ---[ end trace 4c72393d5e30d6c1 ]---
>
> ---
> # bad: [e99d8a8495175df8cb8b739f8cf9b0fc9d0cd3b5] Add linux-next specific files for 20210409
> # good: [e49d033bddf5b565044e2abe4241353959bc9120] Linux 5.12-rc6
> git bisect start 'HEAD' 'v5.12-rc6'
> # good: [24c5f79572740c1744a7ec2e9e21b541acab6de3] Merge remote-tracking branch 'crypto/master'
> git bisect good 24c5f79572740c1744a7ec2e9e21b541acab6de3
> # bad: [4b90473874c7b6af320b9815f82ac305fd8807f7] Merge remote-tracking branch 'ftrace/for-next'
> git bisect bad 4b90473874c7b6af320b9815f82ac305fd8807f7
> # good: [9cf3382276b26848891c7e072db0a774fadd10e4] Merge remote-tracking branch 'sound/for-next'
> git bisect good 9cf3382276b26848891c7e072db0a774fadd10e4
> # bad: [f8d16164c586548d7ccedc058ca9ae547e0cebbe] Merge remote-tracking branch 'mmc/next'
> git bisect bad f8d16164c586548d7ccedc058ca9ae547e0cebbe
> # bad: [c7c19ec098b862a688291f5a1101f7de6e4b0a6c] ASoC: Intel: kbl: Add MST route change to kbl machine drivers
> git bisect bad c7c19ec098b862a688291f5a1101f7de6e4b0a6c
> # good: [1db19c151819dea7a0dc4d888250d25abaf229ca] ASoC: soc-pcm: fixup dpcm_be_dai_startup() user count
> git bisect good 1db19c151819dea7a0dc4d888250d25abaf229ca
> # bad: [f89c0a87b4066fbb0dc6f8039b211bd79a9ab663] Merge tag 'ib-mfd-extcon-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into asoc-5.13
> git bisect bad f89c0a87b4066fbb0dc6f8039b211bd79a9ab663
> # good: [a2cc1568dc50020a807c94bd14a053dd54e9c35e] ASoC: tscs454: remove useless test on PLL disable
> git bisect good a2cc1568dc50020a807c94bd14a053dd54e9c35e
> # good: [cb11f79b4af65005584880eb408f9748c32661d0] ASoC: soc-pcm: indicate error message at soc_pcm_hw_params()
> git bisect good cb11f79b4af65005584880eb408f9748c32661d0
> # good: [60adbd8fbf486214f4ae1946e61df69c3867e20b] ASoC: don't indicate error message for snd_soc_[pcm_]component_xxx()
> git bisect good 60adbd8fbf486214f4ae1946e61df69c3867e20b
> # bad: [dfb81e3b5f47aa0ea5e4832eeb720bc22f07d0c1] ASoC: SOF: Intel: hda: drop display power on/off in D0i3 flows
> git bisect bad dfb81e3b5f47aa0ea5e4832eeb720bc22f07d0c1
> # good: [7e71b48f9e27e437ca523432ea285c2585a539dc] ASoC: amd: Add support for RT5682 codec in machine driver
> git bisect good 7e71b48f9e27e437ca523432ea285c2585a539dc
> # bad: [b951b51e2ca4d37dc9781e14d8a49d2f2b7e715b] ASoC: SOF: add a helper to get topology configured mclk
> git bisect bad b951b51e2ca4d37dc9781e14d8a49d2f2b7e715b
> # bad: [2277e7e36b4b8c27eb8d2fb33a20440bc800c2d7] ASoC: fsl_sai: Don't use devm_regmap_init_mmio_clk
> git bisect bad 2277e7e36b4b8c27eb8d2fb33a20440bc800c2d7
> # first bad commit: [2277e7e36b4b8c27eb8d2fb33a20440bc800c2d7] ASoC: fsl_sai: Don't use devm_regmap_init_mmio_clk
The SAI module is not supported in QEMU, so the access of the register
failed.
you can add bypass the access in QEMU, for example:
diff --git a/hw/arm/fsl-imx6ul.c b/hw/arm/fsl-imx6ul.c
index e0128d7316..62f7bd92a4 100644
--- a/hw/arm/fsl-imx6ul.c
+++ b/hw/arm/fsl-imx6ul.c
@@ -534,6 +534,10 @@ static void fsl_imx6ul_realize(DeviceState *dev,
Error **errp)
*/
create_unimplemented_device("sdma", FSL_IMX6UL_SDMA_ADDR, 0x4000);
+ create_unimplemented_device("sai1", 0x02028000, 0x4000);
+ create_unimplemented_device("sai2", 0x0202c000, 0x4000);
+ create_unimplemented_device("sai3", 0x02030000, 0x4000);
best regards
wang shengjiu
On 4/12/21 3:37 AM, Shengjiu Wang wrote:
[ ... ]
> The SAI module is not supported in QEMU, so the access of the register
> failed.
>
> you can add bypass the access in QEMU, for example:
>
> diff --git a/hw/arm/fsl-imx6ul.c b/hw/arm/fsl-imx6ul.c
> index e0128d7316..62f7bd92a4 100644
> --- a/hw/arm/fsl-imx6ul.c
> +++ b/hw/arm/fsl-imx6ul.c
> @@ -534,6 +534,10 @@ static void fsl_imx6ul_realize(DeviceState *dev,
> Error **errp)
> */
> create_unimplemented_device("sdma", FSL_IMX6UL_SDMA_ADDR, 0x4000);
>
> + create_unimplemented_device("sai1", 0x02028000, 0x4000);
> + create_unimplemented_device("sai2", 0x0202c000, 0x4000);
> + create_unimplemented_device("sai3", 0x02030000, 0x4000);
>
Ah, yes, that takes care of the problem.
Thanks, and sorry for the noise.
Guenter